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TI-2025-35276 Aliases CVE-2025-56221GHSA-w54h-jpcf-gvh9

A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to…

Priority MEDIUM 50CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-307.

Summary

A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to bypass authentication via a brute force attack.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00597 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ascertia:signinghub:*:*:*:*:*:*:*:*up to 8.6.8VulnerableAscertia
  • cpe:2.3:a:ascertia:signinghub:*:*:*:*:*:*:*:* Versions up to 8.6.8 Vulnerable ·Ascertia

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-56221
  2. 2026-10-03 Alias added: GHSA-w54h-jpcf-gvh9

References

Advisory 1

  • TI-2025-37948 An open redirect in Ascertia SigningHub User v10.0 allows attackers to redirect users to… CVSS 3.1MEDIUM 6.1
  • TI-2025-35274 An arbitrary file upload vulnerability in SigningHub v8.6.8 allows attackers to execute… CVSS 3.1CRITICAL 9.8
  • TI-2025-34145 In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset… CVSS 3.1CRITICAL 9.8
  • TI-2025-35277 A lack of rate limiting in the component /Home/UploadStreamDocument of SigningHub v8.6.8… CVSS 3.1HIGH 7.5
  • TI-2025-35278 A lack of rate limiting in the One-Time Password (OTP) verification endpoint of… CVSS 3.1HIGH 8.1
  • TI-2025-35275 Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user… CVSS 3.1HIGH 7.1
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences